Controlled by cables and joystick
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Cable and joystick controlled hydraulic directional control valves – precision of flow control
In advanced mobile applications where high operator station ergonomics and separation of the control block from the cabin are required, hydraulic directional control valves mechanically controlled via cables (Bowden type) and joysticks represent an optimal solution. This design allows for remote manipulation of the valve spools, enabling smooth flow modulation while maintaining short system response times. It is the preferred solution in machines with a high degree of operational function complexity, such as front-end loaders, backhoe loaders, or forestry machinery.
The valves we offer are characterized by high internal tightness, which minimizes control leakage and ensures stable operation of the actuators. A wide range of available configurations allows for full integration with our hydraulic directional control valves, creating a coherent control system. To monitor pressure in individual working sections, we encourage using professional pressure gauges and test kits. The entire installation should be built based on certified industrial connectors, which guarantee the reliability of connections under conditions of variable dynamic loads.
Technical aspects of mechanical control
The cable control mechanism is based on the use of flexible cables with a low friction coefficient, which reduces system hysteresis and allows for extremely precise spool positioning. Thanks to this, the operator gains a direct "feel" of the load. Joysticks working with these valves can be equipped with sections of progressive characteristics, which allows for smooth start and braking of the cylinders.
Key engineering properties:
- Motion transmission linearity: Minimized technological clearances guarantee the predictability of the executive device operation.
- Vibration reduction: Mechanical separation of the valve block from the control lever eliminates the transmission of vibrations from the hydraulic system to the operator.
- Configurability: Possibility of using multi-functional joysticks with optional electrical control (ON/OFF switches built into the handle).
- Environmental resistance: The use of sealed casings with a high IP protection rating prevents cable degradation in harsh weather conditions.
Technical specification
| Parameter | Characteristic |
|---|---|
| Control mechanism | High-efficiency Bowden cables |
| Operating pressure range | Compliant with the standard of monoblock directional control valves |
| Number of sections | Configurable (1–6 sections) |
| Working medium | Hydraulic oils (viscosity 15-75 mm²/s) |
FAQ – Technical questions
1. How does the length of the control cable affect precision?
Excessive cable length with incorrect layout (too small bending radii) can lead to increased friction and delays in spool reaction. We recommend avoiding sharp bends in the casing routing path.
2. Is there a risk of uncontrolled cylinder movement in case of cable damage?
All our directional control valves are equipped with spring-return spool mechanisms. In case of cable breakage, the spool automatically returns to the neutral position (blocking flow), which guarantees the safety of the machine.
3. Can cable control be combined with electrical control in a single joystick?
Yes, we offer hybrid-type joysticks that combine mechanical cable control for the main hydraulic sections with electrical microswitches for operating solenoid valves (e.g., for a grapple or additional functions).